My fiancée had a issue similar to that, where she was gaming it up on her computer, and it just randomly switched to keyboard/mouse controls(i.e. her action cross bar changed to a normal 2 line action bar). She was just actively playing with her controller. So I'm not really sure how this could happen. I use to use controller but recently went to a MMO gaming pad/mouse combo so idk how to fix that situation, or how its even happening.